For comparison sakes.....
In a 700 Ti 280 Ackley 22" barrel, Temps at 55 degrees
my results
Hornady 162 ELD-X
S-B primer
Nosler brass
RL-26 61.5 grains
3,050 average
Barnes 145 LRX
RL-26 63.5
3,236 average
Sadly, I'm not getting anywhere near that velocity out of my 7 SAUM with RL26 with 160 grain Accubonds.